نوع مقاله : کاربردی

نویسندگان

دانشگاه محقق اردبیلی

چکیده

امروزه تهیه‌ی نقشه­های کاربری اراضی با استفاده از داده­های سنجش از دور به عنوان یکی از مهم­ترین و پرکاربردترین روش­ها جهت تولید نقشه­های کاربری اراضی و همچنین ارزیابی کاربری با یکدیگر است. نبود زیر ساخت­های مناسب، رعایت نکردن قوانین قابلیت توسعه‌ی زمین در انتخاب کردن کاربری­ها و مدیریت غیر اصولی آن منجر به وقوع پدیده‌ی فرسایش خاک می­شود هدف از تحقیق حاضر تهیه‌ی نقشه­های کاربری اراضی با استفاده از روش شئ­گرا و همچنین تهیه‌ی نقشه­های پهنه­بندی فرسایش خاک حوضه‌ی آبریز زرینه­رود برای سال­های 2000 و  2018 ماهواره لندست با استفاده از روشWLC  که یکی از روش‌های تصمیم‌گیری چندمعیاره می‌باشد صورت گرفت. نتایج بدست آمده از تغییرات کاربری اراضی با استفاده از طبقه‌بندی شئ‌گرا نشان داد که بیشترین مقدار روند افزایشی مساحت برای کاربری‌های کشاورزی دیم و کشاورزی آبی می‌باشد. این افزایش دو کاربری به ترتیب برابر با 28/18 و 4 درصد افزایش از کل حوضه مورد نظر را در بر می­گیرد. روند تغییرات کاربری­های بایر، مرتع غنی و متوسط، به مرور زمان به نحوی کاهشی بوده است که به طوری که به ترتیب مساحت 04/14، 66/10و 73/5 درصد کاهش داشته است. کاربری انسان ساخت در طول زمان با روندی تقریبا یکنواخت در حال افزایش است که این نوع افزایش در طول 18 سال برابر با 47/2 درصد رشد داشته است. نتایج بدست آمده از نقشه­های تولید شده پهنه­بندی فرسایش سال 2000 و 2018  نشان داد که دو طبقه بسیار پر خطر و پر خطر (منظور طبقاتی هستند که به ترتیب دارای بیشترین پتانسیل فرسایش خاک در حوضه‌ی آبریز زرینه­رود را دارند) که هر کدام 29/15 و 51/27 درصد از منطقه را در برگرفته­اند. این طبقات بیشتر در کاربری­های کشاورزی دیم، کشاورزی آبی، بایر و مرتع متوسط واقع شده است.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Investigation of land use changes in Zarrineh Rud catchment and its effect on soil erosion using WLC model

نویسندگان [English]

  • fariba esfandiyari darabadi
  • hadi rafiei mahmoodjagh
  • roya farzaneh

mohaghegh ardabili university

چکیده [English]

Today, the preparation of land use maps using remote sensing data is one of the most important methods for producing land use maps and land use assessment together.
Lack of proper infrastructure, non-observance of land development capability in selecting land uses and its unprincipled management leads to the phenomenon of soil erosion.
The purpose of this study is to prepare land use maps using object-oriented method and to prepare soil zoning maps of Zarrineh Rud catchment for 2000 and 2018 Landsat satellite using WLC method. The results showed the detection of changes from object-oriented classification
The highest rate of change in rainfed and irrigated agricultural land uses has been faced with the largest increase in area in the region.
The trend of changes in barren land uses, rich and medium rangeland, has been decreasing over time, so that the area has decreased by 14.04, 10.66 and 5.73 percent, respectively.
Man-made use has been increasing almost uniformly over time, which has grown by 2.47% over 18 years.
The results obtained from the erosion zoning maps produced in 2000 and 2018 showed that there are two very high-risk and high-risk classes, each covering 15.29 and 27.51 percent of the area. These classes are mostly located in rainfed, irrigated, barren and medium range agricultural uses.

کلیدواژه‌ها [English]

  • WLC method
  • Zarrinehroud catchment
  • object-oriented classification
  • Landsat
 
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